The 2-mono and 2,6-disubstituted methyl-1,4-dihydropyridines were synthesized by reaction of morpholine, thiophenol, 8-hydroxyquinoline, 2-naphthol and 2-mercopto-1-methyl imidazole with the 2-mono bromo and 2,6-dibromo-1,4-dihidropyridines.

Two building blocks, 2-(1H-tetrazol-5-yl)quinoline-8-ol (8-hydroxyquinoline-2-tetrazole) (H(2)hqt) and 8-hydroxyquinoline-2-carboxylic acid (H(2)hqa) provide convenient dianionic tridentate O,N,N- and O,N,O-chelating units containing the 8-hydroxyquinoline chromophore. These ligands form tris-chelate tris-anionic complexes [Ln(hqa)(3)]K(3) and [Ln(hqt)(3)]K(3) in water at pH = 12. At lower pH p...

A series of manganese(I) tricarbonyl complexes formulated as [Mn(8-HQ)(CO)3Imd] (HQ = hydroxyquinoline and Imd imidazole derivatives) was synthesized fully characterized. These structures could be easily accessed from a common dimeric edifice [Mn2(8-HQ)2(CO)6]. The structure this complex has been confirmed by X-ray diffraction studies. Its reaction with range derivatives (Imd) yielded the monom...

the 2-mono and 2,6-disubstituted methyl-1,4-dihydropyridines were synthesized by reaction of morpholine, thiophenol, 8-hydroxyquinoline, 2-naphthol and 2-mercopto-1-methyl imidazole with the 2-mono bromo and 2,6-dibromo-1,4-dihidropyridines.

Abstract This study was carried out in the laboratory of Shangqiu Institute Technology, Henan to investigate effect a different combination inorganic salt on quality and physiological characteristics cut flowers (CFs) Perpetual Carnation. Furthermore, find best preservation solution that can enhance ornamental value CFs Carnation prolong its vase life. Sucrose, 8-hydroxyquinoline, paclobutrazol...

These analyses show that this cyclic A M P phosphodiesterase.contains at least 15ng of zinc per activity unit. The sodium dodecyl sulphate/polyacrylamide-gel electrophoresis of fraction 18 suggests that the specific activity of pure enzyme is at least 104 units/mg, and the results of Fujimoto et al . (1974), obtained at 37"C, suggest it may be as high as 160 units/mg at 30°C. Thus 1 mol (65000g...

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The localized corrosion behavior of a galvanic aluminum copper couple was investigated by in situ fluorescence imaging with a fiber-optic imaging sensor. Three different, but complementary methods were used for visualizing remote corrosion sites, mapping the topography of the metal surface, and measuring local chemical concentrations of H+, OH-, and Al3+. The first method is based on a pH-sensi...

A Pseudomonas sp. isolated from sewage by enrichment culture on quinoline metabolized this substrate by a novel pathway involving 8-hydroxycoumarin. During early growth of the organism on quinoline, 2-hydroxyquinoline accumulated as the intermediate; 8-hydroxycoumarin accumulated as the major metabolite on further incubation. 2,8-Dihydroxyquinoline and 2,3-dihydroxyphenylpropionic acid were ide...

The possibility of imparting an antibacterial effect to cellulose tissue dyed with the product azo coupling diazotized 4,4’-diaminostilbene-2,2’-disulfonic acid 8-hydroxyquinoline has been shown. It was found that fabrics by fixing dye a silver salt have significant effect, which lasts at least 10 washings.